mongod --dbpath c:/\shujuku 開機(jī)
mongod
mongo repl
use dbname(數(shù)據(jù)庫(kù)名字) 切換到某個(gè)數(shù)據(jù)庫(kù)
db.collectionsname.insert({""}) 在當(dāng)前某個(gè)數(shù)據(jù)庫(kù)集合中插入數(shù)據(jù)
db.collectionsname.find()
mongoimport -d student -c banji0409 c:\Users\Danny\Desktop\shuju.txt --drop(-d表示導(dǎo)入到哪個(gè)數(shù)據(jù)庫(kù)中斋扰，-c表示導(dǎo)入到哪個(gè)集合中--drop表示刪除之前的數(shù)據(jù))
show dbs
show collections
db 查看當(dāng)前所在的數(shù)據(jù)庫(kù)
cookie
req.cookies
拿到cookie中的userid
router.get('/getcartlist', function (req, res) {
let userId = req.cookies.userId;
})
fs模塊
fs.readFile("./temp/test.txt",function(err,data){
console.log(data.toString());
});
fs.writeFile("./temp/test.txt",str,function(err){
if(err){
console.log('寫入失敗')
return
}
console.log('寫入成功');
});
express模塊
當(dāng)我們想呈遞一個(gè)html頁(yè)面的時(shí)候
res.sendFile(__dirname + "/pages/1.html");
靜態(tài)化文件
app.use(express.static("www"));
req.path拿到請(qǐng)求路徑
req.originalUrl拿到完整請(qǐng)求地址
